Pressure Transducer Set Up Lab Report

Where T_calib is calibrated temperature value 〖 T〗_re is the temperature of measurement by temperature recorder. Figure (4-9) calibration curve of temperature recorder .
6. Pressure Transducer Setup (PTS) Pressure transducer setup (PTS) is a well-established technique for measuring the pressure of fluid flow in pipe. Pressure sensor type KELLER model PR-23R /80710-34 operate between 0 to 1 bar and 4 to 20 mA . It was fixed on the pipe by mechanical fitting as shown in figure (4-10). In experimental work used six sensors on pipe with distance 1 m as shown in figure (4-11) . Connecting sensors of pressure with interface and then to the personal computer. The value of pressure transformed from

Relation between operation pressure and current reading that measured by pressure sensor was a linear equation used to correct the pressure sensor reading .
P=0.0625 C-0.25 (4.3)
Where :
P is pressure reading and C is current reading .
6.2. Calibration of Pressure Sensor Reading. Pressure transducer set-up was calibrated by connect U-tube manometer between two points one on the section No.1 and the other on the section No.2 , measuring the difference pressure between two points with difference values of flow rate. Figure (4-14) represent the calibration data for pressure taking from transducer and manometer at the same condition . Relation between manometer reading and that measured by pressure sensor was a polynomial equation used to correct the pressure sensor reading .
"P" _"calib" "=0.239286+0.38593" 〖" P" 〗_"re" "-0.298269" 〖" P" 〗_"re" ^"2" "-0.04243" 〖" P" 〗_"re " ^"3" " ….(4.4)"
Where P_(calib ) is calibrated pressure value ,while P_re is the pressure measurement by pressure sensor

The vibration motion is often converted into an electrical signal. The voltage output of the device is due to the cyclic deformation of the piezoelectric crystals . The frequency , rise time ,maximum and minimum voltage can be obtained from the electrical output of the accelerometer. The specifications of accelerometer is tabulated as shown in table (4-6) . Figure (4-15 ) photograph of accelerometer. Table (4-6) specifications of accelerometer.
Frequency - 5000) Hz
Sensitivity 40 Pc /g
Maximum operational level (peak) 2000 g
Maximum Shock Level (+ Peak ) 5000 g
Weight 30 gram
Mounting Stud
Resonance frequency 39 kHz

7.1 Calibration of Accelerometer Reading. The accelerometer type 4368 Bruel & Kjaer was calibrated by the company supplier according to the chart as shown in figure (4-16) including serial number ,reference sensitivity at 50 Hz at 23 °C ,and voltage sensitivity 38.1 mV/g ,charge sensitivity and capacitance 1197 pF